2 \header { texidoc = "Key signatures can be set per pitch
3 individually. This can be done bby setting @code{Staff.keySignature}
10 \property Staff.keySignature = #'(((1 . 2) . 1) ((0 . 3) . -1))
12 \property Staff.keySignature = #'(((1 . 2) . -1) ((0 . 4) . 2))